boneberg-



(No Model.) 2 Sheets-Sheet 1.

E. H. BONEBERG.

LOOK.

Patented MayglZ, 1896.

fimdm f' Inventor.

By /WM Attorney.

(No Model.) 2 SheetsSheet 2.

E. H. BONEBERG.

LOOK

No. 559,991. Patented May 12, 1896.

Inventor.

wwii m L5 .n J

By 0 04 9 41 Attorney.

AHAM. PHOfO-umq WASHINGTON. D C.

il'NITEiD STATES ATENT OFFICE.

EDXVIN H. BONEBERG, OF BUFFALO, NEW YORK.

SFECIFICATION forming part of Letters Patent No. 559,991, dated May 12,1896.

Application filed ary 8, 1896.

To all whom it may concern:

Be it known that I, EDWIN II. BONEBERG, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented certain new and useful Improvements in Locks, of which thefollowing is a specification.

My invention relates to certain improvements whereby a lock can be usedas an ordinary latch during the daytime and may be locked on the insideso it will be impossible to open it from the outside, or so that it canbe unlocked with a key if desired. The lock can also be adjusted so thatwhile using it either as a latch or lock a stranger opening the door isliable to give an electric alarm, all of which will be fully and clearlyhereinafter described and claimed, reference being had to theaccompanying drawings, in

which-- Figure 1 represents a face view of the look, a vertical sectionbeing shown on or about line a 0., Fig. 2, so as to expose the mechanismbeyond the knob. Fig. 2 represents a vertical longitudinal sectionthrough the lock on or about line b b, Fig. 3, showing the position ofthe parts below the knob when the lock is in its locked position. Fig. 3represents a face view of the lock, the cover being removed to show theinterior construction, the several parts of which are shown in theirlocked position, a section being cut through the knobshaft and attachedkeys. Fig. 4 is also a face view of the lock, showing the cover removedand a,similar section through the knob-shaft and attached keys, showingthe position of the parts when placed so the lock can be unlocked fromthe outside. Fig. 5 is a section on or about line b b, Fig. 3, showingthe unlocked position of the locking-catch. Fig. 6 is a vertical sectionthrough line c, Fig. 3, showing the locked position of the several partsso it can be unlocked by-the attached keys and knob. Fig. 7 is afragmentary vertical section on or about line b b, Fig. 3, showing theposition of the parts in their unlocked position so the device can beopened or closed by the knob alone. Fig. 8 represents a detachedperspective view of the device forlifting the locking-catch. Fig. 9represents a fragmentary section through a portion of the lock-case,showing one of the elec- Serial No. 574,720. (No model.)

trically-attached keys out of contact. Fig. 10 represents a verticalsection on or about line ff, Fig. 2, showing the electrical connectionswith the lock, looking in the direction of the arrow V in said Fig. 2.Fig. 11 represents a section on or about line e c, Fig. 1, lookingupward. Fig. 12 is a detached perspective view of the removable coverthroi'lgh which the knob-shaft passes. Fig. 13 represents a detachedperspective view of the locking-catch.

Referring to the several parts in detail, 1 represents the body of thelock, or that part which is set into a recess made in the door toreceive it. other suitable material and is secured to the door 1 byscrews 2. (See Figs. 2, 5, and 7.) The cover 3 and 3 is provided with aconcavo-convex portion 4, (see Figs. 2, 5, and 7,) having a centraltapering opening in which is fitted a small tapering cover 5, having acentral hole 6, through which the knob-shaft 7 passes. (See Fig. 12.)

The body 1 of the lock is secured to the door 1 in a recess in which itfits nicely by the screws 2. The cover 3 is then fitted thereon,substantially as shown in Figs. 2 and 5, and rigidly secured thereto bya screw 8 on the inside of the door, by which it is made impossible toremove it from the outside of the door. I have shown but one of thescrews 8, but more may be used if desired.

The upper portion of the lock-cover 3 is made easily removable by meansof a lug 4 (shown in Fig. 6) and a screw on the inside of the door, sothat it cannot be removed from the outside. The screw 5 is shown bydotted lines in said Fig. 6.

The object of the above construction is to provide the means for easilyremoving the portion of the cover 3" for the purpose of changing theposition of the keys for operating the electric alarm or for otherpurposes.

The knob-shaft 7 is round in cross-section and passes, as before stated,through the removable portion or cover 5. It then passes through thebody of the look, through the door, and the usual disk-plate 9 until thecollar of the knob 11 (which is secured to a square portion on the endof the shaft) rests against the removable cover 5. The opposite end ofthe knob-shaft is then secured by the It is made of cast-iron, brass, or

knob 12, which is fastened in the ordinary way to a square portion atthe end of the shaft, so that its flange or collar 13 rests against theplate 9. In this position the knob is securely held in place and caneasily be turned in one direction only to unlock the boltthat is, thepart 1 (see Fig. 4) of the transverse locking-bar 14, if turned in theopposite direction to that shown in Fig. 4, will come in contact withthe portion l of the bolt 15 before the opposite end of the bar 11 canmove the bolt far enough to unlock it. Consequently it cannot unlock thebolt by being turned in that direction. The opposite side l of the boltis rounded off so as to leave plenty of room for a reverse movement ofthe bar 14.

To the knob-shaft 7 is rigidly secured, or formed in one integral piecewith it, the usual transverse locking-bar ll. The bolt 15 is providedwith a rear open-slotted portion 16, which straddles the knob-shaft 7.(See Figs. 3 and 4.) At the rear end of the bolt are two upright pieces17 and 17, (against whichthe opposite ends of the locking-bar rest,)either secured to the bolt or formed integral therewith, and a spring18, secured in the ordinary way, substantially as shown in Figs. 3 and4, keeps the bolt 15 forward with a yielding force. It will now be seenthat by turning the knob in the direction of the arrow V in Fig. -;i thebolt will be drawn in as there shown, and that when released the spring18 will act and force the bolt outward and thereby bring the knob backto its normal position again.

In the under side of the bolt 15 is a notch 19, (see Figs. 3 and 4,) andwithin the lock is pivoted a main locking-pawl 20, provided on its underside with a notch 20, and having on the outer side a boss 21, providedwith a keyhole 22, which may be made of anysuitable shape to which thekeyis adapted. The opposite side of the pawl is provided with a pivotedportion 23, which extends through that side of the lock and through thedoor, and is provided with a thumb-piece 24, by which it may be turnedfrom the inside, and it can only be turned, under conditions which willbe described further on, by means of a key adapted to fit the keyhole22.

Then the lock is locked so that it can be unlocked from the outside, themain pawl 20 alone is turned so that its point fits into the notch 19,as in Fig. 3.

hen it is desired to secure the lock so that it cannot be unlocked fromthe outside, the supplementary pawl is employed. This supplementary pawlis pivoted by a pin secured rigidly thereto and which passes through theinner side of the lock and through the door, and is provided with athumb-piece 26, which can only be operated from the inside of the door,so that it can be made to engage with the notch 20, as in Fig. 3, andthereby secure the lock from being opened from the outside, or it can beturned back, as

in Fig. l, so that the pawl 20 can be operated either with a key fromthe outside or by the thumb-piece 2% on the inside, as hereinbcforementioned.

The thumb-piece 26 is shown in Fig. 6. It will be noticed that thespring 18 performs a double work, as it acts against the back end of thepawl 20 to keep it either in or out of engagement with the notch 20.(See Figs. 3 and 4.)

27 represents a curved bar provided with a loekin g foot or catch 28.This curved bar and foot are made integral or both secured rigidlytogether, and both are adapted to be moved together, so that when inengagement with the locking-bar 14: the knob cannot be turned to unlockthe bolt, but when moved away from the locking-bar 14: the knob can beeasily operated. A perspective view of the combined curved bar 27 andfoot piece or catch 28 is shown in Fig. 13. The foot-piece 28 is fittedbetween two portions 2 and 2 made integral with and extending up fromthe inner side of the lock. (See Figs. 3 and 4.) Consequently it is keptsecurely in place and at the same time it can be moved easily up or downbe tween said portions.

By referring to Fig. '7 it will be seen that the foot or catch 28 israised above the transverse locking-bar 1- so that the said bar 1i isfree to be moved to unlock the bolt, and by referring to Fig. 2 it willbe seen that the footcatch is let down below the face of the transverselocking-bar 14. Consequently it is clear that it would be impossible toturn the transverse bar 1i in the proper direction to unlock the bolt,because the foot-catch 28 then lies directly in the way of the bar 14:.

20 represents a bar provided with a cam 30 at its inner end and withawidened flat portion 31 at its outer or exposed end. A detachedperspective view of this device is shown in Fig. 8. It is also shown inFigs. 2, 3, 4, 5, 6, and 7. The object of this bar 29 is to provide themeans for raising the locking-catch and holding it up when it is desiredto use the lock as an ordinary knob-latch during the day. This is doneby turning said bar by taking hold of the flat portion 31 and turningitso as tobring the cam portion 30 up in the position shown in Fig. 7,thereby bringing the locking-catch 28 out of engagement with thetransverse locking-bar 11, so that it can be operated by turning eitherthe inside or outside knobs only to move the bolt 15. The curved bar 27is provided with a series of attached keys 32, 33, and 34. The keypasses through the top part 4: of the lock and bar 27 and is rigidlysecured to said bar by means of a staple 35, which passes through it, asshown in Figs. 2 and 3, so that when the said key33 is pulled upward itlifts the bar and its locking-catch 28 up out of engagement with thetransverse locking-bar 1%, so that the bolt can be operated by theknobs. The keys 32 and 3st also pass the top at, and through the bar 27they are adapted to move easily in their bearings in said bar 27, sothat they can be moved up without moving said bar. Each of said keys 32and 3i is provided with a collar 35, (see Fig. 9,) to prevent it fromgoing down too far, and with a spiral spring 36 and outwardly-extendingpin 37, to hold it down until stopped by the collar 35.

In Figs. 9 and 10, 38 and 39 represent the positive and negative wiresof an electric battery etO. These wires are kept in place by a series ofpins 41. The construction is such that when the key is pulled upward anelectric circuit is formed with an electric bell 45 for giving an alarm.

It will be noticed that both keys 32 and 3i will give an alarm and thelifting of one key only, the key 33, will allow the lock to be operatedby the knobs. Consequently there are two chances of giving an alarm toone of moving the right key for opening the lock. These keys areoperated bythe fingers, as the hand is used to operate the knobs.

The operation of the device will be clearly understood from theforegoing description and drawings. If it is desired to move the bolt 15from the inside of the lock without using the knob or its connectingoperating parts, it can be done by means of the thumbpiece l2. (See Fig.6.) This thumbpiece 42 is connected with the bolt 15 by a pin 43, whichpasses through a slot 44: in the door and lock-cover, and is secured tosaid bolt substantially as shown in said Fig. 6. The slot it is shown bydotted lines in Figs. 3 and et.

I claim as my invention- 1. The combination in a lock provided withknobs for operating it, of a slotted lockingbolt provided withprojecting portions at the rear end of the bolt, means for keeping itforward with a yielding force, a locking-bar on the knob-shaft adaptedto operate against said projecting portions, a locking-catch orfoot-piece 28, and a cam-bar 29, for lifting it out of engagement withthe locking-bar, for the purposes described.

2. The combination in a lock provided with knobs for operating it, of aslotted lockingbolt provided with projecting portions at the rear end ofthe bolt means for keeping it forward with a yielding force, alocking-bar on the knob-shaft adapted to operate against said projectingportions, a locking-catch, keys for lifting it out of engagement withthe locking-bar, and a key for forming and breaking an electric circuitwith an electric bell, for the purposes described.

3. The combination in a lock, of a slotted bolt through which theknob-shaft passes, means for keeping the bolt forward with a yieldingforce, a notch in the under side of the bolt, a main locking pivotedpawl adapted to engage with said notch and lock said bolt, a notch inthe back of the main locking-pawl, a supplementary pawl adapted to bebrought into engagement with the notch in the main locking-pawl andthereby lock it, and means on the inner side of the lock for operatingthe supplementary pawl, for the purposes described.

EDWIN l-I. BONEBERG.

lVitnesses A. J. SANGSTER, JAMES SANGSTER.

